fix(profile): preserve decimal weight in profile display

[LarytheLord]

Summary

Fix profile weight display so decimal weights remain visible instead of always being rounded to whole numbers.

Closes #244

What changed

• Updated ProfileBloc.getDisplayWeight() to format based on value precision:
  • show no decimal for whole-number weights (for example 80)
  • show one decimal for fractional weights (for example 80.5)
• Added a small internal formatter that first rounds to one decimal place to avoid float noise, then suppresses trailing .0.

Why

Issue #244 reports that selecting a decimal weight is possible in the weight picker but profile display rounds it away. This change preserves user-selected decimal precision in the profile subtitle.

Validation

I could not run Flutter/Dart tests in this environment because flutter and dart CLIs are not installed here.

[Elxas866]

Nice work, hope the project will rise again 💤

Btw isn't it better to merge into develop first, instad of main? At least that's what I did - 2 already merged

[LarytheLord]

Thanks for the suggestion, @Elxas866. Good call on branch flow. I opened this against main because it is currently the default branch, but I can retarget to develop if maintainers prefer that for feature/fix intake.\n\nI also pushed a technical follow-up commit (48abbad) to make this PR more robust:\n- extracted weight display formatting into a dedicated utility\n- added unit tests for whole numbers, fractional values, floating-point noise, and rounding behavior\n\nSo this now has both the user-facing fix and regression coverage.

[LarytheLord]

Good suggestion on branch flow. I’ve now retargeted this PR to (and aligned the other still-open PRs in this repo to as well).

[LarytheLord]

Good suggestion on branch flow. I’ve now retargeted this PR to develop (and aligned the other still-open PRs in this repo to develop as well).